. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     Nominal Size(woofer) 6 1/2" (165mm) Mounting Cutout 5 1/4" (132mm) Mounting Depth 2 5/8" (65mm) Recommended Amplifier Power 20 - 275 watts Frequency Response( ฑ 3 dB, in-car) 60 - 20 kHz Nominal Impedance 4 ohms Sensitivity (1 watt / 1 meter) 90 dB   ABOUT US l PRODUCT l OUR DEALER l Q&A l NEWS l TIPS l PRESS RELEASE l TECHNOLOGY l HOME l CONTACT US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . All contents c copyright 2003 Zonic Vision. All rights reserved.